Double-walled enamel-lined container.



C. P. POTTER. DOUBLE WALLBD ENAMEL LINE'D CONTAINER.

APPLICATION FILED JULY 13,1911

Patented 0015515, 1.9.12.

vi rib.

DOUBLE-WALLET) ENAMEL-LINED CONTAINER Specification of Letters Patent.

rammed oet. inicie.

Application filed July 13, 1911. Serial No. 638,240.

T 0 all whom, 1' t may concern Be it known that I, CHARLES F. Po'rrER, a citizen of the United States, residing in Voodhaven, in the county of Queens and State of NewvYork, have invented certain new and useful Improvements in Double- Walled Enamel-Lined Containers, of which the following is a specification.

My present invention relates to an iniprovement in containers, wherein the said containers are comprised of an inner and outer shell composed of steel or other metal, andbeing drawn up from a plurality of flat sheets of a suitable thickness' and'welding the saine into a single unit, iI am enabled to produce a lighter and more lasting article than has heretofore been possible.

Another feature of this improvement is that owing to the material used, the interior of the inside shell, which I call the receptacle portion, may be lined with any suitable vitreous material, such as porcelain, glass, etc., and it is thereafter protected against being chipped or scaled off by reason of blows or external violence, being protected from the same by the outer shell which I term the protective shell.

A further advantage is that owing` to the material used, I am still further enabled to strengthen the outer or protective shell by means of corrugations or transverse iutings, thus lending stifness and rigidity, and by arranging the said corrugations in certain manner to be hereinafter described, I am enabled to reinforce land protect any of the weaker portions of the said outer shell that require any such protection.

A further advantage is, that by my present construction I am enabled to make a container with but one break or crevice in its walls. I am aware that metal containers have been made heretofore that were glass or enamel lined, but none of them have had the enamel or porcelain lined receptacle protected by an outer shell portion entirely insulated by an air space all around between the inner and outer walls thereof, after the manner herein described.

A further advantage is that due to the forms of component parts of the completed structure which cause all of the joints that are desired to be welded to come at the outside of the outer protective portion ofthe container, and the thickened portion 'of these welded joints also give greater strength to the outer protective wall or shell.

In the drawings accompanying Figure 1 is a section taken through one form of my iinproved container. Fig. :2 is another section taken through a modified form. Fig. 3 is another section taken through another modified form of my container. Fig. 4 is a sectional view of one of the end pieces forming the outer wall. Fig. 5 is a sectional view of a half portion of the container. Fig. 6 is an other view of another form of an outer end portion of the container. Fig. 7 is a sectional view of another form of a half portion of the container.

In Fig. 1 is shown a form of container,

Jreferablv of the round tv )e a a roXimatinG v ul v lp a:

in form generally7 the type of container known as a beer keg or barrel. It will be noted that the two ends 1 and 2 are duplicates and similar to that shown in section in Fig. 4. A protective rim 3 is raised on the heads of the end members, thus stiifening the said members and forming a downward extension 4 of said edge 3 which forms a side wall portion, and an inset rim 5 is formed at the lower edge portion thereof. The receptacle portion 6 is like its upper protective head member 1, arranged to be drawn out of one sheet of metal, -thus leaving no crevices or joining lines at any other portion of its receptacle, except at the line 7 where a like receptacle unit 8 adj oins thereto. In Fig. 5 these twol members 6 and 8 are shown as being formed of the internal or chambered portion 9, the walls of said charnber being turned outwardly and forming a flange portiondenoted generally by 10, said fla-nge portion having a seat or channel 11 therein, the wall of metal being then turned back upon itself, as at 12, and being corrugated or swaged, as at 13, and then finished off into a straight edge portion 14, said portion 14 fitting into the inset 5 of the cap members 1 and 2 in Fig. 1. It will be noted that these two members at the point of external engagement present a sm'ooth or ush contour, as at 15, and that similar conditions existat the point of juncture of the two container members, as at 16. It will further be noted that an annular ring member 17 is arranged between the two container members 6 and 8 in such manner as to cause the edges 10 to register or engage one another in alinement. This ring member further stifens the two meeting edges y .',may take place to the interior temer. f

vcombination with new metal placed therein.

It will be noted that this operation leaves the ycontainer in practically one piece and of very stii -or rigid construction with but a minimum amount of crevices where leakage lInfenameling the half interior or receptacle-portions, I cover all of flange portion withfenainelu to the point of actual contact-"and wel ing, thus, while fluid `may reach into the crevice the smallest amount of 'bare ymetal vis exposed, -as shown at 32 affording protection to the said outer and 19, Fig. 3. Or I can venamel the interior 'of the container after the completion of the same as regards welding and bushings, thus- .having an `unbroken liquid resistant lining.

The corrugated members 13 lare here shown ouped near the middle of each of the haltBrr and it will be noted `that they project a sli ht distance beyondtlie center portion of por# tion. rBu ings 22 and 23 suitably aiixed between the inner and outer walls of the container vafford means for filling, emptying, and stoppering, as required.

Fig.` 2 the construction is similar to .that indicated in Fig. 1, with the exception of the vcorrugated members 24, 25,y 26, and 27, they being so arranged as to be evenly ,spaced along the entire length of a single half of the container;v one of lthe corrugations 24 being integrally formed in the head l or cap portionh 28 of the outer shell.

"'.While' I have 4shown in the three principal views that an interior 'air space may be retained about the filled v With a5' suitable compartment may be material, sucli as asbestos, or the l1ke,as.indicated in Fig. 2 at bers this space or 29 zwherei'n the lower half ofthe container 'ing turned inward ed' is shown filled' with the above |mentioned material. t

,-fIn Fig. 3 shown an enamel lined container, a wall of vitreous material 30 being attached to the metal wall 31 in theusual manner and at the .point'of juncture 32, be-

y and 'there abutting one of said con-d eA container, as at 21, therebyl Sinner and upper `mem i another, as at 32. The metal portion 31 is formed as was described for Figs. 1, 2, and 5, with the exception of the abutting walls which are in flat engagement with one another. After being welded, as before described, lt can be seen that this receptacle with its fragile lining is well .protected against injury by violence from rough handling, by the outer spaced protective shell.

In construction I prefer to make these containers'of sheet steel of comparatively light gage, and after assembling and welding, the outer shell or protective covering is made rust proof by proper treatment, such las galvanizing, and the entire structure will then be one of great wearing qualities, being practically indestructible and of moder-` ate cost.

It will be noted that, due to the flange or support formed at the central portion of the v receptacle, the container portions 6 and 8 are centrally suspended thereat, and that with the exception ofthe bushings or other means that maybe usedfor entering the interior of the container there is no other point of contact with the outer shell. This construction favors the carrying therein of such fluids as need protection from the variable changes in temperature, etc., as well as preventing loss by evaporation and breakage.

Having thus described my invention, I claim:

1. A double walled container comprised `of duplicate shells, each shell having an inner receptacle portion and an outer protective shell therefor, said outer shell being formed by reversed extensions of said inner` shell, thereby forming a space between said outer and said inner shells, a. connecting flange'between' said inner and oute` shells .formed integral with said'inner' shell. and the said reversed extension, said flange forming a single centrally located annular means for support of the inner receptacle formed by said shells, and also forming means for connecting the two duplicate 'halves to one another.

l 2. A ,double walled container comprised of duplicate members,A each of said duplicate membershaving 'an inner receptacle-portion and an outer protective shell therefor, said outer protective shell beingformed by a reversed extension 'of the .said inner receptacle portion, and integral flanges formed` between said inner and outer shells, said anges' forming means for attaching said duplicates' togethefr, whereby said container is centrally suspended in said outer shell.

3. A double walled container comprised of duplicate inner shells having reversed outer portions forming outer protective shells and abutting their edges at the middleof said' container, and! duplicate head members having annular extending side perticns arranged to be connected to said reverseijv arranged outer portions. 4c. A double walled container comprised of duplicate inner shells forming an inner receptacle, each of said duplicate inner shells having a reversed outer portion forming outer protective shells and abutting at their edges at. the middle thereof, said edges adapted to receive therein a sealing means, and duplicate head members having annular extending side portions arranged to be connected to said reversely arranged outer portions.

- 5. A double walled container comprised of four drawn metallic portions, two of said portions comprised of duplicate'inner shells forming an inner receptacle, each of said duplicate inner shells having reversed outer portions forming outer protective shells and abutting at their edges at the middle thereof, and duplicate beaded heads or ends having annular flanged extensions, said extensions having annular seats therein and'adapted to receive said outer extension walls Vof said inner receptacle members, the junctures formed thereby, together with the juncture formed by the said duplicate head members, being externally arranged on the outer walls of said container and being adapted to be Welded. I

6. A double Walled container comprised of four dravvn metallic portions, two of said portions forming the inner receptacle portion and having reversed extensions forming an outery protective shell, the other of the two said portions forming the heads of said outer protect-ive shell, the same forming externally arranged junctures, said junc- 40 tures being welded, and the sides and ends of said outer protective shell being convoluted for the purpose described.

T. In a double Walled container, an inner vitreouslj7 lined receptacle portion and an outer protective shell therefor, said receptacle portion being comprised of two duplicate shell members, said outer protective shells being formed of extensions ofthe walls of said receptacle portions being turned 5o back upon themselves, said shells being joined together at their edges near the middle and having arranged in the said edges an annular groove or channel adapted to receive therein sealing means, and duplicate beaded heads or ends having annular langed extensions, said extensions having annular seats therein and adapted to receive said outer extension walls of said inner receptacle members.

8. In a double walled container comprised of an inner vitreously lined receptacle portion cylindrically formed of two duplicate parts, and extensions of the walls of the said inner portions being turned back upon them- ,t5 selves to form a part of the outer protective container shell thereof, having at their points of contact an annular groove or channel adapted to receive therein sealing means, and duplicate beaded heads or ends having annular {ianged extensions, said extensions having annular seats therein and adapted to receive said outer extension Walls of said inner receptacle members, said inner receptacle members and said head or end members being Welded to form a unit container.

9. In a. double Walled container comprised of an inner vitreousljv lined receptacle portion cylindrically formed of tvvo duplicate parts, extensions of the Walls of the said inner portions being turned back upon themselves to form a part of the outer protective container shell thereof, having at their points of Contact an annular groove or channel adapted to receive therein sealing means, and duplicate beaded heads or ends having annular anged extensions, said extensions having annular seats therein and adapted to receive said outerextension Walls of said -inner receptacle members, said inner recep.-

tacle members and said head or end members being welded to form a unit container and having bushings aliording entrj7 into the inner receptacle, said bushings being in fixed engagement with the inner and outer shells thereof.

l0. In a double Walled container comprised of an inner vitreously lined receptacle portion cylindricallj7 formed of tvvo duplicate parts, and extensions of the Walls of the said inner portions being turned back upon themselves to form a part of the outer protective container shell thereof, having at their points of contact an annular groove or channel adapted to receive therein sealing means, and duplicate beaded heads or ends having annular flanged extensions, said extensions having annular seats therein and adapted to receive said outer extension walls of said inner receptacle members, said inner receptacle members and said head or end members being Welded to form a unit container. all of the welding points being arranged to come at the exterior of said container.

11. In a double walled container comprised of an inner treously lined receptacle portion cylindricallv formed of tivo duplicate parts the same being joined together at the middle thereof, extensions of the vvalls of said inner portions being turned back upon themselves to form an outer protective container shell thereof, said shells having at their points of juncture an inter-locking means, and duplicate beaded heads or ends having annular flanged extensions, said extensions havin annular seats therein and adapted to receive said outer extension Walls of said inner receptacle members.

12. In a double walled container comprised of an outer and inner shell, said in 13) ner shell being composed of duplicate memand anv annular ring located in said grooves 5 shells, said inner shells being centrally suspended in the interior of said outer shell by Witnesses: said integrally formed flanges, annular EDWARD D. POTTER, grooves or channels arranged in said flanges, CHAs. J. SAUER.

bers having reversed extensions formi thereby to form an inter-lock between the 10 said outer shell, and intermediate integra said duplicate members. v flanges connecting said inner and outer CHARLES F' POTTER 

